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Magnetic resonance spectroscopy (MRS) is a non-invasive technique that can be used to detect and quantify multiple metabolites. This chapter will review some of the applications of MRS to the study of brain functions. Typically, (1)H-MRS can detect metabolites reflecting neuronal density and integrity, markers of energy metabolism or inflammation, as well as neurotransmitters. The complexity of th
For developing countries like Pakistan, in the absence and scarcity of trust-worthy solar radiation data, the need for an empirical model to predict global solar radiation seems inevitable. Various climatological parameters can be used to develop such models. In this study, linear regression models are developed to estimate the monthly average daily global radiation using cloudiness data for Karac
A delay in surgery due to laboratory abnormalities may increase mortality in patients with hip fracture. In order to optimize the logistics for urgent surgery in patients with hip fractures and anti-vitamin K treatment, individualized doses of a Prothrombin Concentrate were guided by a bedside whole blood prothrombin time test. Thirty patients with emergency hip fracture and preoperative anti-vit
Abstract in Russian В данной работе был использован фантом Алдерсон-РАНДО для экспериментального определения коэффициентов перехода для условий внешнего облучения. Были смоделированы следующие конфигурации облучения: ротационная геометрия облучения с использованием различных точечных источников (99mTc, 131I + 133Ba, 137Cs, 60Co); передне-задняя и задне-передняя геометрия облучения источником 137CsIn the present paper the Alderson RANDO phantom have been used to experimentally determine conversion coefficients. A limited number of exposure situations were investigated for this purpose: rotational-geometry with different radiation point sources (99mTc, 131I+133Ba, 137Cs, 60Co), AP- and PA-geometry with 137Cs and a special pocket-geometry with 137Cs. All experiments were carried out on a larg
The Lake Poopo basin, located on the Bolivian Altiplano, is extremely vulnerable to environmental degradation. The basin displays extreme spatial and temporal variations of water resources and rapidly decreasing water quality due to anthropogenic and natural pollution. The region’s population lives in extreme poverty, and the authorities’ efforts to manage the water resources efficiently have been
Summary: Polymethylmethacrylate, as a widely used material for vertebroplasty, has several drawbacks such as heat development and high allergenic potential. In order to avoid these drawbacks ceramic cement materials have been developed. The purpose of this study was to evaluate a new biointegrative material for vertebroplasty in osteoporotic vertebral fractures regarding pain relief, safety aspect
A modified Delphi method was used to determine thresholds for Minimum Data Set quality indicators for Icelandic nursing homes. The thresholds were then applied to quality outcomes in Icelandic nursing homes for the year 2009. The thresholds indicate areas of good or poor care and can be used for planning services. Icelandic nursing homes seem to be doing best in incontinence and nutritional care.
It is well known that user proximity introduces absorption and impedance mismatch losses that severely degrade multiple-input multiple-output (MIMO) performance of handset antennas. In this work, we experimentally verified the potential of adaptive impedance matching (AIM) to mitigate user interaction effects and identified the main AIM gain mechanism in realistic systems. A practical setup includ
Consider a reflected random walk Wn+1 = (W-n +X-n)(+), where X-o, X-1,... are i.i.d. with negative mean and subexponential with common distribution F. It is shown that the probability that the maximum within a regenerative cycle with mean mu exceeds x is approximately mu (F) over bar(x) as x --> infinity, and thereby that max (W-o,..., W-n) has the same asymptotics as max(X-o,...,X-n) as n --> inf
Soft-input/soft-output symbol decoding plays a significant role in iterative decoding. We propose a simple optimal soft-input/soft-output symbol decoding algorithm for linear block codes which requires one forward recursion using a trellis. For many codes the decoding complexity is lower than previous methods, such as the algorithm by Bahl et al. (1974), and the decrease is shown at its most when
To increase our understanding of the genetic basis of adiposity and its links to cardiometabolic disease risk, we conducted a genome-wide association meta-analysis of body fat percentage (BF%) in up to 100,716 individuals. Twelve loci reached genome-wide significance (P<5 × 10(-8)), of which eight were previously associated with increased overall adiposity (BMI, BF%) and four (in or near COBLL1/GR
Background The pattern of cancer in long-term survivors from childhood cancer has not been investigated comprehensively. Methods We obtained a cohort of 47 697 children and adolescents aged 0-19 years with cancer as defined by the country-wide cancer registries of Denmark, Finland, Iceland, Norway, and Sweden during 1943-2005. Cohort members were followed through age 79 years for subsequent primar
Dopamine (DA) neurons derived from human embryonic stem cells (hESCs) are potentially valuable in drug screening and as a possible source of donor tissue for transplantation in Parkinson's disease. However, existing culture protocols that promote the differentiation of DA neurons from hESCs are complex, involving multiple steps and having unreliable results between cultures. Here we report a simpl
This paper presents an innovative research on urban risk reduction and climate change adaptation that combines case studies, grounded theory and systems analysis, which could be used as a template for similar intersectoral and interdisciplinary investigations. Such a ‘case studies–grounded theory–systems analysis approach’ permits a grounded theory to be built from case study data, which is viewed
Given an electronic wave function, generated by the MCHF program (LS format) or the MCHF_CI program (LSJ format), this program computes the hyperfine interaction constants, A(J) and B(J). In strong experimental magnetic fields, the splitting is also affected by the off-diagonal hyperfine constants A(J,J-1), B(J,J-1), and B(J,J-2) and these are computed as well, depending on the input data.
Liver microcirculation can be affected by a wide variety of causes relevant to liver transplantation and resectional surgery. Intraoperative assessment of the microcirculation could possibly predict postoperative outcome. The present pilot study introduces laser speckle contrast imaging (LSCI) as a new clinical method for assessing liver microcirculation.
